碳纳米管填料静电自组装制备及在导电塑料中的应用

为了提高碳纳米管(CNTs)在塑料中的分散性能,设计碳纳米管填料(CNTs Filler)。阳/非离子表面活性剂复配在水中分散CNTs,并赋予CNTs表面正电性。与表面负电性的炭黑或聚苯乙烯微球复合,通过静电吸附作用自组装形成均匀稳定的复合物,制备出CNTs Filler。对比了CNTs Filler、CNTs和炭黑在PS和ABS塑料中,经不同成型工艺的导电结果,证明了使用碳纳米管填料提高了碳纳米管在塑料中的分散性能,总结了碳纳米管相对炭黑作为塑料导电功能体适合压延成型加工。推荐碳纳米管用于导电片材、导电薄膜和高导电塑料等领域。

Carbon Nanotubes Filler Prepared by Electrostatic Self-assembly and Application in Conductive Plastics

In order to improve the dispersion of carbon nanotubes(CNTs)in plastics,carbon nanotubes filler was prepared.CNTs were dispersed in water promoted by cationic/non-ionic surfactant.CNTs with positive electricity in surface and carbon black or polystyrene microsphere with negative electricity in surface composited together by electrostatic self-assembly to form uniform and stablecarbon nanotube filler.The conductive results by different molding process of CNTs filler,CNTs and carbon black in PS and ABS were compared to prove that the application of carbon nanotubes filler could improve the dispersion of carbon nanotubes in plastic.The unique properties of carbon nanotubes comparing to carbon black as plastic conductive functional medium were summarized.Recommend carbon nanotubes for conductive sheets,conductive films and high conductive plastic,etc.